中国科学院机构知识库网格系统: 检索

Multiwavelength Observations of Fast Radio Bursts 期刊论文 OAI收割
Universe, 2021, 卷号: 7, 页码: 76
作者: Nicastro, Luciano; Guidorzi, Cristiano; Palazzi, Eliana; Zampieri, Luca; Turatto, Massimo

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收藏 | 浏览/下载：7/0 | 提交时间：2021/11/18

HXMT identification of a non-thermal X-ray burst from SGR J1935+2154 and with FRB 200428 期刊论文 OAI收割
Nature Astronomy, 2021
作者: Li, C. K.; Lin, L.; Xiong, S. L.; Ge, M. Y.; Li, X. B.

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收藏 | 浏览/下载：47/0 | 提交时间：2021/11/18

Constraining the X-Ray-Infrared Spectral Index of Second-timescale Flares from SGR 1935+2154 with Palomar Gattini-IR 期刊论文 OAI收割
The Astrophysical Journal, 2020, 卷号: 901, 页码: L7
作者: HXMT

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收藏 | 浏览/下载：16/0 | 提交时间：2022/02/08

Radio transient sources Magnetars Soft gamma-ray repeaters 2008 992 1471 Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Instrumentation and Methods for Astrophysics Abstract: The Galactic magnetar SGR 1935+2154 has been reported to produce the first example of a bright millisecond-duration radio burst (FRB 200428) similar to the cosmological population of fast radio bursts (FRBs). The detection of a coincident bright X-ray burst represents the first observed multiwavelength counterpart of an FRB. However, the search for similar emission at optical wavelengths has been hampered by the high inferred extinction on the line of sight. Here, we present results from the first search for second-timescale emission from the source at near-infrared (NIR) wavelengths using the Palomar Gattini-IR observing system in the J band, enabled by a novel detector readout mode that allows short exposure times of ?0.84 s with 99.9% observing efficiency. With a total observing time of ?12 hr (?47,728 images) during its 2020 outburst, we place median 3Ҡlimits on the second-timescale NIR fluence of ?18 Jy ms (13.1 AB mag). The corresponding extinction-corrected limit is ?125 Jy ms for an estimated extinction of A_J = 2.0 mag. Our observations were sensitive enough to easily detect an NIR counterpart of FRB 200428 if the NIR emission falls on the same power law as observed across its radio to X-ray spectrum. We report nondetection limits from epochs of four simultaneous X-ray bursts detected by the Insight-HXMT and NuSTAR telescopes during our observations. These limits provide the most stringent constraints to date on fluence of flares at 10¹⁴ Hz, and constrain the fluence ratio of the NIR emission to coincident X-ray bursts to R_NIR ? 0.025 (fluence index ?0.35).

GRB 200415A: A Short Gamma-Ray Burst from a Magnetar Giant Flare? 期刊论文 OAI收割
The Astrophysical Journal, 2020, 卷号: 899, 页码: 106
作者: HXMT

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收藏 | 浏览/下载：30/0 | 提交时间：2022/02/08

Gamma-ray bursts Soft gamma-ray repeaters Magnetars Gamma-ray transient sources 629 1441 992 1853 Astrophysics - High Energy Astrophysical Phenomena Abstract: The giant flares of soft gamma-ray repeaters (SGRs) have long been proposed to contribute to at least a subsample of the observed short gamma-ray bursts (GRBs). In this paper, we perform a comprehensive analysis of the high-energy data of the recent bright short GRB 200415A, which was located close to the Sculptor galaxy. Our results suggest that a magnetar giant flare provides the most natural explanation for most observational properties of GRB 200415A, including its location, temporal and spectral features, energy, statistical correlations, and high-energy emissions. On the other hand, the compact star merger GRB model is found to have difficulty reproducing such an event in a nearby distance. Future detections and follow-up observations of similar events are essential to firmly establish the connection between SGR giant flares and a subsample of nearby short GRBs.

Calvera: A Low-mass Strangeon Star Torqued by Debris Disk? 期刊论文 OAI收割
ASTROPHYSICAL JOURNAL, 2018, 卷号: 854, 期号: 2, 页码: 165
作者: Ge MY(葛明玉); Wang, WY; Li, YY; Xu, RX; Tong, H

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收藏 | 浏览/下载：21/0 | 提交时间：2019/09/24

accretion, accretion disks pulsars: individual (Calvera1RXS J141256.0+792204) stars: neutron

A possible origin of the Galactic Center magnetar SGR 1745-2900 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS天文和天体物理学研究, 2017, 卷号: 17, 期号: 6, 页码: 54
作者: Zheng, XP; Cheng Q(程泉); Zhang SN(张双南); Cheng, Q; Zhang, SN

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收藏 | 浏览/下载：9/0 | 提交时间：2019/08/27

stars: neutron stars: magnetars stars: magnetic field pulsars: individual (SGR 1745-2900)

Scale-invariance in soft gamma repeaters 期刊论文 OAI收割
CHINESE PHYSICS C中国物理. C, 2017, 卷号: 41, 期号: 6, 页码: 65104
作者: Lin HN(林海南); Sang Y(桑语); Wang P(王平); Sang, Y; Wang, P

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收藏 | 浏览/下载：11/0 | 提交时间：2019/08/27

stars: individual (SGR J1550-5418) stars: neutron, gamma rays: bursts

Understanding the X-ray spectrum of anomalous X-ray pulsars and soft gamma-ray repeaters 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2015, 卷号: 15, 期号: 4, 页码: 525-536
作者: Guo, YJ; Dai, S; Li, ZS; Liu, Y; Tong, H

收藏 | 浏览/下载：30/0 | 提交时间：2016/04/18

stars: neutron pulsars: individual (1E 1547.0-5408 X-rays: stars 1RXS J170849-400910 SGR 0501+4516 SGR 1806-20)

The Short Bursts in SGR 1806-20, 1E 1048-5937, and SGR 0501+4516 期刊论文 OAI收割
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2015, 卷号: 127, 期号: 949, 页码: 211-222
作者: Qu, ZJ; Li, ZS; Chen YP(陈玉鹏); Ji L(纪龙); Zhang S(张澍)

收藏 | 浏览/下载：40/0 | 提交时间：2016/04/18

WIND BRAKING OF MAGNETARS 期刊论文 OAI收割
ASTROPHYSICAL JOURNAL, 2013, 卷号: 768, 期号: 2, 页码: 144
作者: Tong H(仝号); Tong, H; Xu, 宋黎明; RX; Song, LM

收藏 | 浏览/下载：15/0 | 提交时间：2016/04/08

pulsars: general stars: magnetars stars: neutron